For the record, I do want to state that I agree with the points raised by @OrangeAppled
For instance, I do agree with the fact that their flaws should be up for discussion just as much as the rest - though this kind of conversation seems to always somehow fall into the trap of becoming a bashing session, no matter the type, ime. And I do agree that the special snowflake stereotype for INFPs is one of the hardest ones to get rid of - and often untrue. Special snowflake syndrome happens in all types - mostly in people who just feel misunderstood and isolated in their lives, and that includes Infjs.
The problem is that that 'rarity' line in the INFJ and INTJ profiles tends to attract the people who are susceptible to that feeling. Whether they are in fact INFJ or not. And from what I've seen, both non-INFJs and INFJs with special snowflake syndrome are more likely to go on a witch hunt and crusade to 'unmask' supposedly fake infjs more readily and protect their special status.
Hell, the same happens with being NTs. How often didn't we laugh on here in the early years that typing as NT meant you had to earn your T-card first,coz they got tested, prodded and second-guessed from the moment they stepped in here, since there is a preference to type T and be considered 'rational and smart', especially for men.
Get rid of the 'playing favourites' with types and you'll see whole lot less of this. Hell, that was the mission of this place in the first place: to bridge that gap and have equal appreciation for each type.